Ecology Fair University of Minnesota Monarch Lab
Carondelet Catholic School 2004
Carondelet Catholic School
3210 W 51st St
Minneapolis, MN 55410
How Does Having Multiple Larvae in a Cage Affect the Growth of Each lLarva.
Betsy B, Caroline G
We measure the length of monarch larvae. In this experiment we wanted to see if having multiple larvae in a cage effects the total growth of each of the larvae. It turns out that the larvae that were in the same cage grew longer than the single larvae. We cannot conclude though that the larvae in the same cage grow larger than single larvae, because the larva in the same cage were about 2-3 days older than the single larvae. Two new things we learned are that larvae are sometimes territorial and that they dont eat quite as much when they are within 1 day of molting
Monarchs and the Effects of Light
Kirsten E, Katherine S
In this lab we measured the length of monarch larvae in response to the amount of light it was exposed to. We were trying to determine if the monarch larvae would grow longer in response to the amount of light they were exposed to. The results showed that the larvae in the light grew (on average) ).5 mm longer than the larvae in the dark. The average length for the dark larvae was 42.5 mm. The average length for the larvae in the light was 43 mm. Since the results were so close we cannot conclude that monarch larvae kept in light grow longer than those who are kept in the dark. Two things we learned in this lab are that the amount of light a monarch larva is exposed to has no visible effects on the length of the larvae, and that larvae kept in the dark spend more time as a pupa.
The Effect of Temperature on the Maximum Length of Monarch Larvae.
Maddy D, Ginny S
In this experiment, my group and I measured the effect of warm and cool temperatures on maximum larvae length. We were trying to determine whether monarch larvae grew longer in a warmer or colder environment. On average, the larvae grew longer in a warmer environment. The average length for the 6 larvae in the cool cage was 40. mm. The average length for the 6 larvae in the warm cage was 44 mm. We arent 100% sure about our results, though. For about 1/3 of our experiment, we had an uncontrolled variable-sunlight. We managed to fix it though. Two things I learned in this lab are that regardless of the temperature, monarch larvae will grow well and be healthy. I also learned that in a cooler environment monarch larvae will complete their life cycle faster.